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New perspectives on therapy for vaginal endodermal sinus tumors.
Liann N Handel1, Stephen M Scott, Roger H Giller
1Department of Pediatric Urology, The Children's Hospital and The University of Colorado School of Medicine, Denver, Colorado, USA.
The Journal of Urology
|July 20, 2002
Summary
Vaginal endodermal sinus tumors are rare pediatric cancers. Early diagnosis and chemotherapy are crucial, with bone marrow transplant considered for refractory cases.
Area of Science:
- Pediatric Oncology
- Gynecologic Oncology
- Germ Cell Tumors
Background:
- Malignant germ cell tumors represent 3% of childhood cancers.
- Endodermal sinus tumor (EST) is the most common type, typically treated with chemotherapy, reserving surgery.
- Vaginal primary EST is exceptionally rare.
Purpose of the Study:
- To report institutional experience with vaginal endodermal sinus tumors in children.
- To review clinical features, treatment, and outcomes for this rare condition.
Main Methods:
- Retrospective review of 3 pediatric patients with vaginal EST.
- Analysis of clinical presentation, treatment protocols, and patient outcomes.
Main Results:
- Two patients responded well to initial combination chemotherapy, with rapid alpha-fetoprotein normalization and sustained remission.
- One patient with progressive disease achieved long-term remission after salvage therapy including surgery, radiation, chemotherapy, and autologous bone marrow transplant.
Conclusions:
- Vaginal EST is rare and may present as painless bleeding, necessitating a high index of suspicion.
- Endoscopic evaluation of the genitourinary tract is essential, even with negative ultrasounds.
- Autologous bone marrow transplant is a viable salvage option for unresponsive vaginal EST.